Ah, Knoxville, the home of McGee-Tyson Air Base. Just a short 30 minutes from the Smokey Mountains! I have some fond memories of there. 50 pounds is more than enough to kill a deer. Practice every other day and lift weights on the days in between and you should be fine. If you are accurate with the number of shots you take each time, it only takes one arrow to kill a deer.

Good luck brother and welcome!